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CVE-2023-52926— io_uring/rw: split io_read() into a helper

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于IORING_OP_READ未正确消耗提供的缓冲区列表，导致内存释放后重用。

CVSS 7.8 · High EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 2b188cc1bb857a9d4701ae59aa7768b5124e262e< 72060434a14caea20925e492310d6e680e3f9007 affected
2b188cc1bb857a9d4701ae59aa7768b5124e262e< 6c27fc6a783c8a77c756dd5461b15e465020d075 affected
2b188cc1bb857a9d4701ae59aa7768b5124e262e< a08d195b586a217d76b42062f88f375a3eedda4d affected
5.1 affected
< 5.1 unaffected
6.1.122≤ 6.1.* unaffected
6.6.68≤ 6.6.* unaffected
6.7≤ * unaffected
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I. Basic Information for CVE-2023-52926

Vulnerability Information
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Vulnerability Title
io_uring/rw: split io_read() into a helper
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: IORING_OP_READ did not correctly consume the provided buffer list when read i/o returned < 0 (except for -EAGAIN and -EIOCBQUEUED return). This can lead to a potential use-after-free when the completion via io_rw_done runs at separate context.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于IORING_OP_READ未正确消耗提供的缓冲区列表，导致内存释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 2b188cc1bb857a9d4701ae59aa7768b5124e262e ~ 72060434a14caea20925e492310d6e680e3f9007 -
Linux Linux 5.1 -

II. Public POCs for CVE-2023-52926

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III. Intelligence Information for CVE-2023-52926

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Patches & Fixes for CVE-2023-52926 (3)

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-52926

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